I am a visual artist who is now wanting to add sound to my work. I have a Tascam prota studio that is about 20 years old and I just recently purchased a Zoom H4. I have been collecting sound from the environment with the H4's built in mic and an old Shure 588SD Unisphere B. Due to the fact that I cannot isolate sounds with either of these mics I am looking to buy a shotgun mic. The majority of use will be hand held while walking in a variety of locations such as city streets, woods, corn fields, etc. so a boom is unrealistic. I have been recommended a Rode NTG-2 but am seeking advise from someone who would be using mics in this way. I like the versatility of the Azden SGM-2X but am unsure how it would function in my application. After collecting these sounds I am editing on Garage Band and have tinkered with Cubase. Any assistance you can give would be greatly appreciated.